BEIJING LANGWEI TIMES TECHNOLO

We are good at waterproofing products for construction projects,Website:http://w

BEIJING LANGWEI TIMES TECHNOLOGY AND SCIENCE CO.,LTD DN

We are good at waterproofing products for construction projects,Website:http://www.long-wee.it, such as joint sealing and waterproofing, concrete cracks sealing and repair with the chemical inject grouts and so on.